Circular-saw machine.



S. M. TAYLOR & A. D. OSBORN.

CIRCULAR SAW MACHINE.

APPLICATION FILED JUNE 13. I91!- 1 273,422. Patented July 23, 1918.

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S. M. TAYLOR & A. D. OSBORN.

CIRCULAR SAW MACHINE.

APPLICATION FILED JUNE 13. 1911.

Patented July 23, 1918.

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S. M. TAYLOR & A. D. OSBORN.

CIRCULAR SAW MACHINE.

APPLICATION mzo JUNE 13, m1.

Patented July 23, 1918.

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UNITED STATES PATENT OFFICE.

SAMUEL MARTIN TAYLOR AND ALBERT DAVID OSBORN, 0F BLAIRSDEN', CALIFORNIA.

CIRCULAR-SAW MACHINE.

Specification of Letters Patent.

Patented July 23, 1918.

Application filed .Tune 13, 1917. Serial No. 174,565.

7 '0 all whom it may concern.

Be it known that we, SAMUEL M. TAYLOR and ALBERT D. OSBORN, citizens of the United States, residing at Blairsden, in the county of Plumas and State of California, have in vented certain new and useful Improve ments in Circular-Saw Machines, of which the following is a specification, reference beinghad to the accompanying drawings.-

It is an object of the invention to provide a circular saw machine embodying novel and improved means whereby the work or plates 2.

stock may be guided with respect to the saw or saws.

It is also an object of the invention to provide a device of this general character having a novel and improved work guide including relatively movable guide members between which the work or stock passes with the minimum of frictional resistance and wherein the relative movement of the members compensates for any unevenness in the stock or Work so that no hindrance or interference will be encountered during the sawing operation.

Figure 1 is a view in elevation illustrating a circular saw machine constructed in accordance with an embodiment of our in vention;

Fig. 2 is a view in top plan of the device as disclosed in Fig. 1;

Fig. 3 is a sectional view taken substantially on the line 33 of Fig. 1;

v Fig. 4 is a sectional view taken substantially on the line H of Fig. 2; I

Fig. 5 is a sectional view taken substantially on the line 5-5 of Fig. 1;

Fig. 6 is a sectional view taken substantially on the line 6-6 of Fig. 1; and

Fig. 7 is a view partly in elevation and partly in section illustrating the mounting for the saws as herein disclosed.

As disclosed inthe accompanying drawings and as herein embodied-,1 denotes ahorizontal bed or table supported at a predetermined elevation through the medium of end The bed 1 is provided with an elongated slot or opening 3, one longitudinal marginal portion of which being defined by a movable plate or supplemental bed 4. As herein disclosed the opposite end portions of the plate or supplemental bed 4 rest upon shoulders 5 produced transversely of the opposed faces of the end plates 2. The plate or supplemental bed l is adapted to be moved along the shoulders 5 in order that the width of the opening or slot 3 may be regulated.

The opposed faces of the end plates 2 are provided with a plurality of pairs of vertically alined and inwardly directed lugs 6, and rotatably supported by each pair of lugs 6 is a threaded shaft 7 operatively engaged with an end portion of a horizontally disposed beam 8. The outer beam 8 adjacent the opening or slot 3 has its intermediate portion 8 removable for a purpose which will hereinafter be more particularly referred to. The lower end portions of the shafts 7 carried by each of the end plates 2 are operatively engaged, as indicated at 9, with a transversely disposed shaft 10 rotatably supported by the end plate 2.

The shafts 10 extend beyond corresponding sides of the end plates 2, and said extended portions are provided with sprockets 11, with which an endless sprocket chain 12 is operatively engaged. By this arrangement it will be perceived that the shafts10 will be caused to rotate in unison and in the Same direction in order to efi'ect a raising or lowering of the beams 8. lVhile the requisite rotation of the shafts 10 may be obtained by a desired pull upon the chain 12, it is to be understood that a mechanical means may be employed if desired for driving the chain 12. I

The central portions of the beams 8 are provided with longitudinally disposed slots 14 which permit an adjustable mounting on said beams 8 of the bearings 15. Rotatably supported by the bearings 15 is a mandrel 16 having allixed thereto a pulley 17 adapted to be coupled with a suitable source of power. Also affixed to the mandrel 16 in a position below the opening or slot 3 of the bed 1, is a drum 18 of a relatively lar e diameter, and preferably of a diameter su stantially onc-half that of the saw or saws stock is effected, while the large diameter of the saw aflords an increased cutting v circle which in practice has been found to 22, to afford a means whereby a spanner or a other implement may be readily engaged with said collar 20 in order to apply or re move the same.

, Whenit is desired to apply orremove a saw or saws, the beams 8 are preferably moved to their lowermost position. The intermediate portion 8 of the outer beam' 8, and if desired the plate or supplemental bed 4, are removed. Convenient access can then be had to the collar 20 to eflect its removal,

and after the collar. 20 has been removed a saw. or saws S can be easily taken 0E and replaced. I

I While'we herein disclose the saws as arranged in agang of five, we do not wish to be understood as limiting ourselves to this exact number, as any number of saws may be employed within the scope of the machine. An end portion of the bed 1 is provided with a transversely disposed guideway 23 extending a predetermined distance beyond'the supplemental bed or plate 4:.

Within the guideway 23 1s a slide member 2 1 provided at its outer end with an upstanding 1 flange 25 and a depending'flange 26. The

opposite ends of the guideway 23 are closed, and in swivel connection with the outer end 27 of the guideway 23 is a threadedemember 28 1 disposed through the depending flange 26L By this arrangement it is per ceived that by rotating themember 28 the slide 24 is caused, to move longitudinally of the guideway 23. As herein embodied the outer end'portion of the member 28 has coacting therewith a ratchet lever 29, operating in a well known manner to rotate the member 28. i V 3 g The inner end portion. of the slide 24:is provided with an upstanding bracket 30,

' which'rotatably supports the rollers 31. ar-

ranged in predetermined spaced relation transverselyiof the guideway 23, with the axes of said rollers 31- vertically disposed.

' The upper face o f ther slide 24: interme diate the bracket 30"and the upstanding flange 25"is provided with a g'uideway32 withwhich is movably engaged .a supplemental slide 33. The inner portion of the '55 slide 33 is also provided with an-upstand ing bracket 34 which rotatably supports the rollers 35, also spaced transversely of the guideway 23 with their ZLXGS VQItiCELllY disposed. The forward end of the slide 33 is provided with an upstanding flange 36, and interposed between theflanges 25 and .36 is an expansible member 37 ,i which tends to disposed between the brackets 30 and 34:, and

it will be at once self-evident that the contact of the stockor work with the rollers 31"and 35 permits an advance of the work or stock toward the saws S with slight frictional resistance. It will also be understood that the member 37 permits the slide 331 to have such movement as to compensate for any unevenness in the stock or work, and so that any such unevenness in the stock or work will not hinder or interfere with a saw- V v ing operation. v The bracket 30 has integrally connected therewith a guide plate 38 which'exten'ds over-the bed 1 at a pointinwardly ofthe opening or slot 3, and which serves as a guiding means for the work or stock. The posi- 7 tion of the plate 38' relative to the slot or opening 3 can be 'readilv ad'iusted by the slide 24. Y Seated within the end portion of the opening or slot 3 back of the saws 'S is a block V 39 provided with upstanding splitters or arms40, of a thickness, substantiallyequal to the'thickness of the saws S, and arranged in alinement with said saws S. V The arms or splitters 40 are also inclined toward the saws S andpartly overlie the same, as is disclosed particularly in Figs. '1 and 2.} The arms or splitters 40 extend within the cuts in the stockor work and thereby serve to hold the stock or work from strikin back of the saws. Iclaim: f l' i 1. A circular saw machine consisting of a bed provided with an opening, a saw supported below thebed'and adapted to extend 7 through the opening of the bed, a-guideway arranged adjacent one end offthe slot and disposed transversely thereof, a slide movable within the guidewav', means for. imparting movement to the slide longitudinally of the guideway a second slide movably mounted upon the first named slide, work engaging means carried by"adjacentends'of the slides, means for constantly urging one of the slides in one direction"independently of the second snde naa guide plate carried bythe second slide and extending over the bed.

,2. A circular saw machine eonsistingofa 'bed provided withfan opening, saw sup ported below the'bed and adapted to extend through the opening, a guide way arranged adjacent one: end of the slot'and disposed transversely thereof, a slide movable within In testimony whereof we hereunto aflix our the guide way, a second slide movably signatures in the presence of two witnesses. mounted upon the first named slide, work en- SAMUEL MARTIN TAYLOR. gaging means carried by the slides, and an ALBERT DAVID OSBORN. expansible member coat-ting with the slides Witnesses:

for constantly urging the second named slide J. R. KRIQKREM, J13,

in one direction. IDA G. MORAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

